A mobile phone, also known as cellphone or handphone, is an electronic device which is used for mobile communication over a specific network. Mobile phones offer standard voice service as well as SMS for text, email, gaming, Bluetooth, camera, MMS for sending or receiving photos, video, Music player, GPS, radio and access to internet. First generation of Mobile phone was known as Analog cellular telephony (1G), then second generation with Digital mobile communication (2G), Widerband mobile communication(3G), Broadband fourth generation(4G) and so on. Mobile phone features also include the call registers, alarm, memo, personal organiser, ringtones, camcorders, wireless modem, USB, memory card reader, instant messaging, touch panels. Mobile phones usually obtain power from rechargeable batteries. There are various manufacturers who sell standard phone with advanced features such as Apple, LG, Motorola, Nokia, Samsung, Sony Ericsson, Lemon, Videophone, Blackberry etc.